之前用jsonp 解決跨域問題，現在用CORS實現跨域請求解決java 跨域問題：
主要代碼如下
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package com.hy.fliter;import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.httpclient.HttpStatus;/*** Created by WangShuai on 2016/7/30.*/public class CorsFilter implements Filter {@Overridepublic void init(FilterConfig filterConfig) throws ServletException { }@Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {HttpServletResponse response = (HttpServletResponse) servletResponse;HttpServletRequest request = (HttpServletRequest) servletRequest;// 指定允許其他域名訪問response.setHeader("Access-Control-Allow-Origin", "*");// 響應類型response.setHeader("Access-Control-Allow-Methods", "POST, GET, DELETE, OPTIONS, DELETE");// 響應頭設置response.setHeader("Access-Control-Allow-Headers", "Content-Type, x-requested-with, X-Custom-Header, HaiYi-Access-Token");if ("OPTIONS".equals(request.getMethod())){response.setStatus(HttpStatus.SC_NO_CONTENT);}filterChain.doFilter(servletRequest, servletResponse);}@Overridepublic void destroy() { }} |
web.xml 代碼如下配置
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<filter><filter-name>cors</filter-name><filter-class>com.hy.fliter.CorsFilter</filter-class></filter><filter-mapping><filter-name>cors</filter-name><url-pattern>/*</url-pattern></filter-mapping> |
以上所述是小編給大家介紹的使用CORS實現JavaWeb跨域請求問題的方法，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對服務器之家網站的支持！
